* {
    margin: 0;
    padding: 0;
}

.container {
    display: flex;
    height: calc(100vh - 48px );
}
.header{
    line-height: 48px;
}
.button{
    padding: 8px 12px;
    border:1px solid #ddd;
    background-color: #fff;
    margin: 0 12px;
}
.left-nav {

    width: 175px;
    background-color: #475263;
}

.right-container {
    flex: 1;
    background-color: #434343;
}
